orcein (Crossword)

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We didn't find answers to the clue “Orcein” but we did find clues where “Orcein” could be the answer:
  1. Food coloring
  2. Natural dye

Definitions of “orcein”
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• A red dye, the principal coloring matter of cudbear and orchil
• A natural dye derived from orcinol by treatment with air and ammonia
• (or-se´in) a brownish-red coloring substance obtained from orcinol

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